Feed-water heater for boilers



(No ModeL) J. LOTHES.

FEED WATER HEATER FOR BOILERS. No. 577,925. Patented Mar. 2, 1897.

NITED STATES 'JOHN'LOTIIES, OF CINCINNATI, OHIO.

FEED-WATER HEATER FOR BOILERS.

SPECIFICATION forming part of Letters Patent No. 577,925, dated March 2,1897.

Application filed May 10, 1894- Serial No. 5101 NO 11106 1 To all whomit may concern.-

Be it known that I, JOHN LOTHES, a citizen of the United States, and aresident of Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Feed-Water Heatersfor Boilers, of which the following is a specification.

My invention relates to feed-water heaters for steam-boilers. economicalreliable device for utilizing the waste steam from the engine to heatthe water as it passes to the boiler; and the invention consists in thepeculiar combination and arrangement of parts illustrated in theaccompanying drawings, hereinafter described in connection therewith,and pointed out in the claims.

In the drawings, Figure 1 is a central vertical section of a feed-waterheater constructed according to my invention. Fig. 2 is atransversesection of the inner cylinder.

Referring to the parts, which are indicated 1 by similarreference-letters wherever they occur throughout both views, Arepresents the outer case, which is preferably cylindrical in form,consisting of a light sheet-metal cylinder fitted with two branch pipesB and B, one for the admission of waste steam to the inte- 'rior of thecylinder and the other for its escape therefrom. The body of thecylinder has outwardly-turned flanged ends to receive the top a and thebottom or, riveted or bolted to the ends of the cylinder in the usualmanner. The bottom of the cylinder has a waste or drip pipe a to carryoff the condensed water.

Centrally within the cylinder A is a small cylinder O, supported uponfeet 0, which are i secured to the bottom a and to the bottom of thecylinder O. The cylinder O is centrally divided from the top to near thebottom by a partition 0. The edges of the partition c are flanged inopposite directions and riveted to the shell of the cylinder.

D is the feed-pipe, leading from any source of water-supply tothe'insideof the cylinder A, passing through the head a and out throughthe bottom a through packing-glands cl,which allows for expansion andcontraction and at the same time prevents leakage. This pipe union (1.

Its object is to provide an tube, and its upper terminal is connected toit at e. Upon the opposite side from this connection is the branch f,which is connected by an elbow to the pipe E, which leads to the boiler.The lower branch of the pipe D, which extends through the bottom of theouter shell, may be fitted with a waste-cock to drain the coil whendesired.

The central cylinder 0, the coil, and feedwater pipes, at least thatportion of them within the cylinder A, are preferably made of copper.source of supply through the coil is delivered into one chamber of thecenter cylinder C, thence passes down around the lower end of thepartition 0, up through the opposite chamber, thence through the pipe Fto the boiler, as indicated by the arrows, the water being heated in itspassage b y the waste steam The water passing from the passing into thecylinder through the pipe B V and out through the pipe B, or theposition of these pipes B and B may be reversed. The waste steam may befed into either one and exhausted at the other.

From the bottom of the cylinder O a wastepipe 0 passes through a packedopening in the bottom a of the outer case. This pipe is also fitted witha suitable cock, and the purpose of it is to drain any mud or sedimentthat may settle in the bottom of the cylinder.

In some localities where the water is heavily charged with sediment thecylinder O should be carried through the bottom a of the case, so as toutilize the whole space within the case A for heating purposes, as thesediment settling in the bottom of the cylinder would act as anon-conductor and limit the heating-surfaces, but where water isreasonably pure the form and proportions shown in the drawings aredeemed the best.

I have shown the pipes D andF as passing through the top of the case,but it is obvious that they may be introduced through the sides as wellwhen it is found more convenient to make the connection with either thewatersupply or the boiler. The whole apparatus is shown supported uponlegs A, but may be supported on brackets or in any convenient mannerdesired. I have also shown an ordi nary. manhole-opening in the side ofthe'case the case.

What I claim as new, and desire to secure by Letters Patent, is

1. In a feed-Water heater the combination of the outer shell interposedin the escapepipe of a steam-engine, a cylinder within said shell havinga central partition dividing the same into two commmunicating chambers,the feed-water pipe passing through the shell and terminating in a coilsurrounding said inner cylinder the terminal of the coil being connectedto one chamber of said inner cylinder, and an outlet-pipe from theopposite chamber of said cylinder passing through the outer case tocommunicate with the boiler, whereby the Water is compelled to travelthrough the coil and through both chambers of the inner cylinderbeforepassing to the outlet-pipe, substantially as shown and described. v

2. The combination of the outer case perforated at opposite ends, thebranches of the exhaust-pipe communicating with said case, the innercylinder supported above the bottom of said case, a partition in saidcylinder dividing it into two chambers communicating with each othernear the bottom, the feed- .Water pipe passing through the outer case, acoil surrounding the inner cylinder connected to the feed-water pipe andhaving its terminal connected to one of the chambers of the innercylinder near its upper end, the discharge-pipe passing from the top ofthe opposite chamber, and a waste-pipe connected to the bottom of theinner cylinder and passing to the outside of the case, substantially asshown and described.

3. The combination of the outer shell in terposed in the escape-pipe ofa steam-engine, an inner cylinder supported within said case, a centralpartition Within said cylinder extendingto near the bottom thereof, afeed-water pipe passing into the case and terminating in a coilsurrounding the inner cylinder and the terminal of said coilcommunicating with the inner cylinder near the top of one chamber, adischarge-pipe passing from the top of the outer chamber and through theouter case, a discharge-pipe leading from the bottom of the innercylinder through the bottom of the outer case, and a discharge-pipe fromthe bottom of the outer case to carry ofi the Water of condensation,substantially as shown and described.

4. The combination of the outer case interposed in the escape-pipe of asteam-engine, the inner cylinder supported centrally above the bottom ofsaid outer case, the partition extending from the top of said cylinderto near the bottom thereof dividing the cylinder into two chambers, afeed-water pipe passing Vertically through the outer case and having alateral branch terminating in a coil surrounding the inner cylinder andcommunicating with one of its chambers near the top thereof, adischarge-pipe leading from the top of the opposite chamber through theouter case, and packing-glands for said feed and discharge pipes toprevent leakage and allow for the expansion and contraction of thepipes, substantially as shown and described.

JOHN LOTHES.

Witnesses:

EMMA LYFORD, GEO. J. MURRAY.

